Engine complaints by model year
Mileage when the problem started
What owners report
On 7/16/2026 exactly 1 week after i purchase the vehicle after fueling i drove about 1 mile when the car started to misfire, when attempting to accelerate. Check engine light flashes a few times and then went off. I then attempted to reverse into my driveway and when attempting to do so the vehicle shut off completely. But started right back up. I then called the dealership and was asked to bring it in. The dealership has the vehicle about 2 days and said it has been repaired it had bad spark plugs. When to get the car it drove fine with no issues until 7/28/2026 when i made an attempt to drive to work, i had driven about a mile from my home and car to a red light when the light turned green i attempted to accelerate and the vehicle was hesitate. Then a few warning lights came on that showed issues with electronic throttle control and electronic stability system service. …
I am reporting a serious safety concern with my 2026 Jeep Grand Cherokee L. On multiple occasions, while driving and needing to slow down quickly behind another vehicle, the vehicle has emitted an audible warning, the engine has shut off while the vehicle was still moving, and the "D" drive indicator began flashing. When this occurs, the vehicle loses propulsion and I am only able to coast to a stop. I then have to place the vehicle in Park and restart the engine before the transmission will operate normally again. This has happened more than once and appears to occur during firm or rapid braking/deceleration. The braking was not an emergency stop or collision. The vehicle simply required quicker-than-normal deceleration due to traffic ahead. …
The contact owns a 2025 Jeep Grand Cherokee L. The contact stated that while driving 60 MPH, the accelerator pedal was depressed, and the vehicle failed to respond. There were no warning lights illuminated. On a separate occasion, the contact stated that while the vehicle was driven over 60 MPH, the vehicle made an abnormally loud sound coming from the muffler. The contact merged to the side of the road, turned off the vehicle, and after the engine cooled down, the vehicle functioned properly if the vehicle did not exceed 60 MPH. On another occasion, while the vehicle was parked outside a store, the contact went back to start the vehicle, and the brake warning lights illuminated. The vehicle was started; however, the transmission failed to shift into drive or reverse. The dealer was not made aware of the failure. The vehicle was not diagnosed or repaired. …
The contact owns a 2025 Jeep Grand Cherokee L. The contact stated that while driving 65 MPH, the engine surged and RPM revved above 7,000 RPM, and the vehicle failed to accelerate as needed. The contact stated that while depressing the accelerator pedal, the vehicle failed to respond, and the transmission failed to respond. The contact stated that there were several unknown warning lights illuminated. The contact pulled over to the shoulder of the roadway and turned off and restarted the vehicle, and the vehicle returned to normal operation. The failure was intermittent. The vehicle was taken to a dealer but was not yet diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 24,000.
The contact owns a 2024 Jeep Grand Cherokee L. The contact stated that while driving at an undisclosed speed, there was an abnormal hissing and tapping sound coming from the engine compartment, with the check engine warning light illuminated. The vehicle was towed to a dealer, where it was diagnosed and determined that the wiring harness had failed due to rodent damage. The dealer informed the contact that the wiring insulation was soy-based and had been chewed on by rodents. The dealer stated that rodent urine and blood were found near the damaged wiring, and the area was not cleaned. The vehicle was not repaired. The contact was advised by the dealer to place mothballs under the vehicle to deter rodents. The dealer also confirmed that no protective covering or preventative measure would be installed to prevent a future failure. …
This vehicle was purchased brand new Nov.29 2025 on Jan. 20 2025 (mileage - 1232) the vehicle was driven about 48 miles and once arrived the vehicle was placed in Park and turned off as normal. After 90 or so minutes inside came out to start vehicle and it would not start, dash lit up with multiple error messages : "Service Transmission Continue in D don't shift or turn off vehicle until you reach a desired location as you may not be able to shift again" "Service Electronic Stability Control" "Auto Park Disabled" "Vehicle not in Park" every feature on the car disabled. It would then not turn the power back off at all. Called roadside assistance and waited in 2 degree weather with my wife and child for about 2 hours to get towed to nearest Jeep dealer, all the while the power would not turn off to the Jeep. …
Computer telling vehicle to do a sudden unintended acceleration. Forward collision warning system did not respond. Air bags didn't deploy. No diagnostics have been done. No warning lamps illuminated on dash. Vehicle currently is at repair shop. While pulling into a parking space at low rate of speed, vehicles engine reved up and vehicle took off, braking system did not respond unable to stop vehicle, hit a parking lot light post .
This vehicle has been making a noise in the front left side since new (day one). The vehicle has been taken to the dealership about 10 times in attempt to fix this issue. During the last service, the dealership performed multiple tests and concluded that the noise source is the engine motor mounts. If they disconnect the electrical plug of the motor mounts all the noises are gone. Consequently, they proceeded to replace the left front motor mount but unfortunately the noise is still there and concluded that there is no fix available right now. They understand that Jeep needs to redesign the motor mounts and update the software the controls the engine motor mounts. I know a few owners of the same vehicle that have the same issue. Jeep knows about it but doesn't do anything to redesign these parts in order to correct the design flaw. …
Related recalls (1)
Engine and engine cooling › Cooling system › Radiator assembly
Chrysler (FCA US, LLC) is recalling certain 2024 Jeep Grand Cherokee and Grand Cherokee L vehicles. The radiator crossmember bolts may not be properly secured, which can lead to improper air bag deployments and a fuel leak during a crash.
Remedy: Dealers will inspect and secure the crossmember bolts as necessary, free of charge. Owner notification letters were mailed January 9, 2025. Owners may contact FCA customer service at 1-800-853-1403.
Frequently asked questions
Which Jeep Grand Cherokee L years have engine problems?
By NHTSA complaints, the 2026 (20), 2021 (9), 2024 (8), 2025 (8) and 2022 (6) model years. Engine complaints make up 80% of all complaints for the 2026.
Is there a recall for Jeep Grand Cherokee L engine problems?
Yes — 1 recall, including 24V-926 (radiator assembly, Dec 12, 2024). Recall repairs are free at authorized dealers; check a specific car with the VIN recall check.
At what mileage do Jeep Grand Cherokee L engine problems start?
Across all years, half of the complaints with a recorded mileage happened before about 42,000 miles; 67% happened before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.